ABSTRACT
The pre-piling template has been applied to ensure the accuracy and efficiency of pile-driving of offshore wind pre-piling jacket foundations. In contrast to the conventional pre-piling template with mudmat, two different types of suction bucket pre-piling templates (i.e. the pre-piling template with the manual working platform (PPTP) and without the manual working platform (PPT)) were introduced to adopt the unique soft clay geological condition in China. This paper presents a comparison study on the structure strength and the suction bucket foundation bearing capacity of PPTP and PPT based on an offshore wind project in the South China Sea. The results showed that the PPT not only has a lightweight advantage but also can reduce the risk and time of installation of suction buckets. The PPT was successfully applied to Yangjiang Qingzhou offshore wind farm project for the pile installation of the pre-piling jacket foundation. The results of this work can provide a reference for the design practice of the pre-piling templates for the OWT pre-piling jacket foundation.
